15384772648 has 24 divisors (see below), whose sum is σ = 33556073850. Its totient is φ = 6593473824.

The previous prime is 15384772631. The next prime is 15384772661. The reversal of 15384772648 is 84627748351.

It can be written as a sum of positive squares in only one way, i.e., 8146506564 + 7238266084 = 90258^2 + 85078^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19623043 + ... + 19623826.

Almost surely, 2^15384772648 is an apocalyptic number.

It is an amenable number.

15384772648 is an abundant number, since it is smaller than the sum of its proper divisors (18171301202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15384772648 is a wasteful number, since it uses less digits than its factorization.

15384772648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39246889 (or 39246878 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 55.

The spelling of 15384772648 in words is "fifteen billion, three hundred eighty-four million, seven hundred seventy-two thousand, six hundred forty-eight".